According to the requirements of universities for graduation thesis defense, some need to do ppt, and some don't need to do ppt. Graduation thesis defense is an important form of organized, prepared, planned and evaluated papers. For the school, the preparation before expanding the material defense is mainly to do the organization work before the defense. These organizational tasks mainly include: examining and approving students' qualifications to participate in graduation thesis defense, organizing defense committees, drawing up graduation thesis performance standards, and arranging defense venues.